The prevalence of radix molaris in the mandibular first molars of a Saudi subpopulation based on cone-beam computed tomography
| Autor: | Nassr Al-Maflehi, Saad Al-Nazhan, Hassan AL-Alawi, Ghadeer N. Shihabi, Mohammed Nabil Zahid, Mazen A. Aldosimani |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Molar Cone beam computed tomography Root canal Radix molaris Mandibular first molar Supernumerary root 03 medical and health sciences 0302 clinical medicine Root canal morphology stomatognathic system Medicine Radix Orthodontics Cone-beam CT business.industry Significant difference 030206 dentistry General Medicine medicine.disease Radix entomolaris 030104 developmental biology medicine.anatomical_structure business Research Article |
| Zdroj: | Restorative Dentistry & Endodontics |
| ISSN: | 2234-7666 2234-7658 |
| DOI: | 10.5395/rde.2020.45.e1 |
| Popis: | Objectives The purpose of this study was to determine the incidence of radix molaris (RM) (entomolaris and paramolaris) in the mandibular first permanent molars of a sample Saudi Arabian subpopulation using cone-beam computed tomography (CBCT). Materials and methods A total of 884 CBCT images of 427 male and 457 female Saudi citizens (age 16 to 70 years) were collected from the radiology department archives of 4 dental centers. A total of 450 CBCT images of 741 mature mandibular first molars that met the inclusion criteria were reviewed. The images were viewed at high resolution by 3 examiners and were analyzed with Planmeca Romexis software (version 5.2). Results Thirty-three (4.5%) mandibular first permanent molars had RM, mostly on the distal side. The incidence of radix entomolaris (EM) was 4.3%, while that of radix paramolaris was 0.3%. The RM roots had one canal and occurred more unilaterally. No significant difference in root configuration was found between males and females (p > 0.05). Types I and III EM root canal configurations were most common, while type B was the only RP configuration observed. Conclusions The incidence of RM in the mandibular first molars of this Saudi subpopulation was 4.5%. Identification of the supernumerary root can avoid missing the canal associated with the root during root canal treatment. |
| Databáze: | OpenAIRE |
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